/*
 *所有关于Customer类的业务代码应在此处编写
*可使用repository.调用常用方法，获取EF/Dapper等信息
*如果需要事务请使用repository.DbContextBeginTransaction
*也可使用DBServerProvider.手动获取数据库相关信息
*用户信息、权限、角色等使用UserContext.Current操作
*CustomerService对增、删、改查、导入、导出、审核业务代码扩展参照ServiceFunFilter
*/
using VOL.Core.BaseProvider;
using VOL.Core.Extensions.AutofacManager;
using VOL.Entity.DomainModels;
using System.Linq;
using VOL.Core.Utilities;
using System.Linq.Expressions;
using VOL.Core.Extensions;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.AspNetCore.Http;
using MyMES.IRepositories;
using MyMes.Infrastructure;
using MyMES.Dto;
using VOL.Entity.DomainModels.Core;
using System.Threading.Tasks;

namespace MyMES.Services
{
    public partial class CustomerService
    {
        private readonly IHttpContextAccessor _httpContextAccessor;
        private readonly IBaseRepository<Customer> _customerRepo;
        private readonly ICustomerRepository _repository;//访问数据库

        [ActivatorUtilitiesConstructor]
        public CustomerService(
            ICustomerRepository dbRepository,
            IHttpContextAccessor httpContextAccessor,
            IBaseRepository<Customer> customerRepo
            )
        : base(dbRepository)
        {
            _httpContextAccessor = httpContextAccessor;
            _customerRepo = customerRepo;
            _repository = dbRepository;
            //多租户会用到这init代码，其他情况可以不用
            //base.Init(dbRepository);
        }

        /// <summary>
        /// 根据查询条件获取客户数据
        /// </summary>
        /// <param name="dto">查询条件</param>
        /// <returns>分页客户数据</returns>
        public async Task<PageGridData<Customer>> GetCustomer(GetCustomerDTO dto)
        {
            PageGridData<Customer> pageGridData = new PageGridData<Customer>();
            
            // 构建查询条件
            var query = _repository.FindAsIQueryable(x => true);
            
            // 根据客户编码筛选
            if (!string.IsNullOrEmpty(dto.CustCode))
            {
                query = query.Where(c => c.CustCode.Contains(dto.CustCode));
            }
            
            // 根据客户名称筛选
            if (!string.IsNullOrEmpty(dto.CustName))
            {
                query = query.Where(c => c.CustName.Contains(dto.CustName));
            }
            // 根据客户简称筛选
            if (!string.IsNullOrEmpty(dto.CustAbbreviation))
            {
                query = query.Where(c => c.CustName.Contains(dto.CustAbbreviation));
            }
            
            // 获取总记录数
            int total = await query.CountAsync();
            pageGridData.total = total;
            
            // 分页查询数据
            var customers = await query
                .OrderByDescending(c => c.CustId)
                .Skip((dto.PageIndex - 1) * dto.PageSize)
                .Take(dto.PageSize)
                .ToListAsync();
                
            pageGridData.rows = customers;
            pageGridData.status = 1; // 成功状态
            
            return pageGridData;
        }
  }
}
